On Mon, Sep 21, 2020 at 06:03:53PM +1000, Stephen Rothwell wrote:
> diff --cc arch/arm64/mm/mmu.c
> index 087a844b4d26,64211436629d..000000000000
> --- a/arch/arm64/mm/mmu.c
> +++ b/arch/arm64/mm/mmu.c
> @@@ -493,21 -483,10 +494,15 @@@ static void __init map_mem(pgd_t *pgdp
> #endif
>
> /* map all the memory banks */
> - for_each_memblock(memory, reg) {
> - phys_addr_t start = reg->base;
> - phys_addr_t end = start + reg->size;
> -
> + for_each_mem_range(i, &start, &end) {
> if (start >= end)
> break;
> - if (memblock_is_nomap(reg))
> - continue;
> -
> - __map_memblock(pgdp, start, end, PAGE_KERNEL, flags);
> + /*
> + * The linear map must allow allocation tags reading/writing
> + * if MTE is present. Otherwise, it has the same attributes as
> + * PAGE_KERNEL.
> + */
> + __map_memblock(pgdp, start, end, PAGE_KERNEL_TAGGED, flags);
> }
It looks fine. Thanks Stephen.
--
Catalin
